稀土镧对热浸渗铝钢组织和耐蚀性的影响  

THE INFLUENCE OF RARE EARTH LANTHANUM ON THE MICROSTRUCTURE AND CORROSION-RESISTANCE OF ALUMINUM HOT-DIPPED STEEL

作　　者：胡鹏飞[1] 文九巴[1] 李全安[1] 张荥渊[1] 李晓源[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003

出　　处：《腐蚀与防护》2004年第7期281-283,共3页Corrosion & Protection

基　　金：河南省高校杰出科研人才创新工程项目(2001kycx009)

摘　　要：研究了添加稀土镧对热浸镀渗铝钢渗层组织和含CO2水介质条件下耐腐蚀性的影响,结果表明在0%～1%范围内,由于稀土的催渗作用,随着稀土含量的增加,渗层中富铝层增厚。当稀土添加量为0%～0.5%时,渗层的耐蚀性逐渐提高,当稀土添加量大于0.5%时,渗层的耐蚀性反而逐渐降低。添加0.5%稀土的渗层的耐腐蚀性能最好,为不加稀土的1.65倍。The influence of rare earth lanthanum on the microstructure and corrosion-resistance of hot-dipped aluminum in water containing CO_2 was studied. The results show that the rich aluminum layer in the hot-dipped Aluminum becomes thicker with the increase of the rare earth content from 0%～1.0% because of the of rare earth. The corrosion-resistance is enhanced when rare earth is added from 0% to 0.5% but is impaired when rare earth content exceeds 0.5%. The hot-dipped aluminum with 0.5% rare earth possesses the best corrosion-resistance which is 1.65 times as much as that of without rare earth.

关 键 词：La稀土 渗铝钢 腐蚀 耐蚀性 

分 类 号：TG174.445[金属学及工艺—金属表面处理]